Tyres/tracks And Soil Compaction tool.

Total Dissolved Solids (ppm, mg/kg).

The relative proportions of sand, silt, and clay particles in a mass of soil. Texture can be coarse (sand particles predominate), medium (equal parts of sand, silt and clay), or fine (clay particles predominate). The basic textural classes, in order of increasing proportion of fine particles, are; sand, loamy sand, sandy loam, loam, silt loam, silt, sandy clay loam, clay loam, silty clay loam, sandy clay, silty clay, and clay. The sand, loamy sand, and sandy loam classes may be further divided by specifying "coarse,'' "fine'', or "very fine'

Diagram allotting names to soils with specific portions of sand, silt and clay (http://www.fao.org/3/a-i3794e.pdf), consult Figure 1.

The mechanical cultivation of a soil profile for any purpose. Tillage can be performed to accomplish a number of tasks including: breaking compactions, incorporation of crop residues, manures, fertilizers or weeds, seedbed preparation, weed control.

Radish that has been bred and developed to produce a large taproot and penetrate compacted soil layers to increase soil aeration and water infiltration, to decrease compaction and to increase rooting depth opportunities for successive crops.

The overall physical character of soil with regard to its suitability (e.g., ease of tillage and quality of the seedbed) for crop production.

The surface soil horizon (A) which is modified when cultivated, and designated Ap.

1) Measure of the efficiency of all inputs to a production process. (http://www.businessdictionary.com). 2) Measures the residual growth in total output of a firm, industry, or national economy that cannot be explained by the accumulation of traditional inputs such as labor and capital (www.boundless.com; wikipedia).

The original farming method handed down from generation to generation. It involves the intensive use of indigenous knowledge, natural resources and cultural beliefs of the farmers (USDA NAL glossary).